<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>爱心鱼</title>
</head>
<style type="text/css">
	body{
		padding-top: 10px;
	}
	.all_bg{
		width: 800px;
		height: 600px;
		margin: 0 auto;
	}
	#allcanvas{
		position: relative;
		width: 800px;
		height: 600px;
		margin: 0;
	}
	#canvas1,#canvas2{
		position: absolute;
		bottom: 0;
		left: 0;
	}
	#canvas1{
		z-index: 3;
	}
	#canvas2{
		z-index: 2;
	}
</style>
<body>
	<div class="all_bg">
		<div id="allcanvas">
			<canvas id="canvas1" width="800" height="600"></canvas>
			<canvas id="canvas2" width="800" height="600"></canvas>
		</div>
	</div>
</body>
<script type="text/javascript" src="js/main.js"></script>
</html>